Last month, we covered the Amiigo which, frankly, looks kind of awesome if it works as advertised. For those who missed it, here's the gist: you put on a bracelet and a shoe clip and the two track your workout. The system then logs that data and feeds it into some fancy software that analyzes your sessions and tells you how much weight you're losing, how many calories you're burning, and what other exercises might be right for you.